The interns at Saturday Night Live are passionate about comedy. But do you think Lorne Michaels cares about their dreams? Not really. He cares about the next joke. Is it funny? Great, I’ll remember you. If not, there’s a new intern class coming in. Thanks for playing.
This is a really good way of illustrating this point, Cal. Harsh, but fair. It comes back to what you build your self-esteem around. If you build it around being right or being accepted, you're f*cked, because somebody's inevitably going to think you're not that great and let you know.
However, if you build it around being a learner, you can keep your sanity while receiving (useful) feedback and getting so good you can't be ignored.